<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>v-on</title>
</head>
<body>
    <script src="/js/vue.js"></script>
    <div id = "app">
        <button v-on:click="getRandom">生成随机整数</button>
        <div>生成的整数是:{{count}}</div>
    </div>
    
    <script>
       var vm =new Vue({
         el:"#app",
         data:{
           count:0
         },
         methods:{
            getRandom:function(){
                this.count=Math.floor(Math.random()*10);
            }
         }
       })
    </script> 
</body>
</html>